Z8F021ASH020SC datasheet(25/276 Pages) ZILOG

25 / 276 page

PS022815-0206

Overview

Z8 Encore! XP® 4K Series

Product Specification

Low Battery Detector

The low battery detector (LVD) is able to generate an interrupt when the supply voltage

drops below a user-programmable level. The LVD is available on 8-pin devices only.

UART

The UART is full-duplex and capable of handling asynchronous data transfers. The UART

supports 8- and 9-bit data modes and selectable parity. The UART also supports multi-

drop address processing in hardware. The UART baud rate generator (BRG) can be config-

ured and used as a basic 16-bit timer.

Timers

Two enhanced 16-bit reloadable timers can be used for timing/counting events or for

motor control operations. These timers provide a 16-bit programmable reload counter and

operate in One-Shot, Continuous, Gated, Capture, Capture Restart, Compare, Capture and

Compare, PWM Single Output and PWM Dual Output modes.

Interrupt Controller

The Z8 Encore! XP® 4K Series products support up to 20 interrupts. These interrupts con-

sist of 8 internal peripheral interrupts and 12 general-purpose I/O pin interrupt sources.

The interrupts have 3 levels of programmable interrupt priority.

Reset Controller

The Z8 Encore! XP® 4K Series products can be reset using the RESET pin, power-on

reset, Watch-Dog Timer (WDT) time-out, STOP mode exit, or voltage brown-out (VBO)

warning signal. The RESET pin is bi-directional, meaning it functions as reset source as

well as a reset indicator.

On-Chip Debugger

The Z8 Encore! XP® 4K Series products feature an integrated on-chip debugger (OCD).

The OCD provides a rich set of debugging capabilities, such as reading and writing regis-

ters, programming Flash memory, setting breakpoints and executing code. A single-pin

interface provides communication to the OCD.

Z8F021ASH020SC Datasheet(PDF) 25 Page - Zilog, Inc.